CVE-2005-2079 in Backup Exec
Summary
by MITRE
Heap-based buffer overflow in the Admin Plus Pack Option for VERITAS Backup Exec 9.0 through 10.0 for Windows Servers allows remote attackers to execute arbitrary code.
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Analysis
by VulDB Data Team • 07/18/2024
The vulnerability described in CVE-2005-2079 represents a critical heap-based buffer overflow flaw within the Admin Plus Pack Option of VERITAS Backup Exec software version 9.0 through 10.0 running on Windows servers. This security weakness exists in the software's handling of input data within the administrative component, specifically when processing certain network requests or configuration parameters. The flaw originates from insufficient bounds checking mechanisms in memory allocation routines, creating conditions where malicious input can overwrite adjacent memory locations in the heap memory space. Such buffer overflow conditions are particularly dangerous because they can be exploited to execute arbitrary code with the privileges of the affected service account, potentially leading to complete system compromise.
The technical implementation of this vulnerability involves the improper handling of user-supplied data within the Admin Plus Pack functionality, which is designed to provide enhanced administrative capabilities for backup operations. When the vulnerable software processes incoming network requests or configuration parameters through the administrative interface, it fails to validate the length of input data against allocated buffer boundaries. This oversight allows attackers to craft specially formatted payloads that exceed the intended buffer capacity, causing memory corruption that can be leveraged for code execution. The heap-based nature of the overflow means that the vulnerability occurs in dynamically allocated memory regions rather than stack-based buffers, making exploitation more complex but equally dangerous due to the unpredictable memory layout and potential for information disclosure.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a pathway to gain unauthorized access to critical backup infrastructure. Since VERITAS Backup Exec is commonly deployed in enterprise environments for critical data protection, compromising the administrative components creates opportunities for attackers to manipulate backup operations, access sensitive data, or establish persistent access points within the network. The remote exploit capability means that attackers do not require physical access or local credentials to leverage this vulnerability, making it particularly attractive for widespread exploitation. This vulnerability directly maps to CWE-121 Heap-based Buffer Overflow, which is classified as a high-risk weakness due to its potential for arbitrary code execution and privilege escalation. The attack pattern aligns with ATT&CK technique T1059.007 Command and Scripting Interpreter: Python, where attackers can leverage the overflow to execute malicious code through the administrative interface.
Mitigation strategies for CVE-2005-2079 should prioritize immediate patch deployment from VERITAS, as the vendor has released security updates specifically addressing this heap overflow vulnerability. Organizations should implement network segmentation to limit access to Backup Exec administrative interfaces, particularly restricting remote access to these critical components. Additional protective measures include deploying intrusion detection systems to monitor for suspicious network traffic patterns associated with exploitation attempts, implementing strict access controls for administrative accounts, and conducting comprehensive vulnerability assessments to identify other potentially affected systems. The remediation process should also include monitoring for signs of exploitation such as unusual network connections or unauthorized backup operations. System administrators should consider disabling unnecessary administrative features and implementing application whitelisting to prevent execution of unauthorized code. Organizations with legacy systems that cannot be immediately patched should implement network-level restrictions to limit exposure while planning for proper security updates. The vulnerability underscores the importance of maintaining current security patches and following secure coding practices that include proper input validation and memory management to prevent similar heap-based buffer overflow conditions in future software deployments.